# DatasetSchema


Describes the schema for a dataset. For more information on schemas, see [CreateSchema](https://docs.amazonaws.cn/personalize/latest/dg/API_CreateSchema.html).

## Contents


 ** creationDateTime **   <a name="personalize-Type-DatasetSchema-creationDateTime"></a>
The date and time (in Unix time) that the schema was created.  
Type: Timestamp  
Required: No

 ** domain **   <a name="personalize-Type-DatasetSchema-domain"></a>
The domain of a schema that you created for a dataset in a Domain dataset group.  
Type: String  
Valid Values: `ECOMMERCE | VIDEO_ON_DEMAND`   
Required: No

 ** lastUpdatedDateTime **   <a name="personalize-Type-DatasetSchema-lastUpdatedDateTime"></a>
The date and time (in Unix time) that the schema was last updated.  
Type: Timestamp  
Required: No

 ** name **   <a name="personalize-Type-DatasetSchema-name"></a>
The name of the schema.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 63.  
Pattern: `^[a-zA-Z0-9][a-zA-Z0-9\-_]*`   
Required: No

 ** schema **   <a name="personalize-Type-DatasetSchema-schema"></a>
The schema.  
Type: String  
Length Constraints: Maximum length of 20000.  
Required: No

 ** schemaArn **   <a name="personalize-Type-DatasetSchema-schemaArn"></a>
The Amazon Resource Name (ARN) of the schema.  
Type: String  
Length Constraints: Maximum length of 256.  
Pattern: `arn:([a-z\d-]+):personalize:.*:.*:.+`   
Required: No

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/personalize-2018-05-22/DatasetSchema) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/personalize-2018-05-22/DatasetSchema) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/personalize-2018-05-22/DatasetSchema)